50
there’s no way x is 360 or 140
Answer:
2y
Step-by-step explanation:
The mistake is line 4, she should have divided 42 by 5, not add 5 and 16
Answer:
80%
Step-by-step explanation:
To find percentage increase, we use the following formula:
Percentage Increase = 
Here
New means the latest value (which is 18 dancers)
Old means the previous value (which is 10 dancers)
The Multiplication by 100 is to convert the decimal answer to percentage.
So, we have:
New = 18
Old = 10
Now we substitute and find:

So, there was an increase of 80%
96/4. You should get the answer by dividing 96 by 4.